I MODIFICATED THE TAIL WHEEL, IT IS FULL SWIVEL NO WHEEL ARM & I MAKE A ELECTRIC LOCK SYSTEM . IT'S A SELENOID WITH A PERNAMENT MAGNET PIN. I DRILL A HOLE IN THE ATTACHING BRACKET THROUGH THE AXLE. WHEN I SWITCH TAIL LOCK ON THE SELENOID MAKE MAGNETIC FIELD , PUSH THE PIN INTO THE AXLE AND LOCK. I SWITCH OFF THE CURRENT AND THE PIN STAYS LOCK BECAUSE IT'S A SELF MAGNET. WHEN I SWITCH UN-LOCK I GIVE TO SELONOID A INVERSE CURRENT AND MAKE A INVERSE MAGNETIC FIELD AND THE PIN CAME BACK AND UN-LOCK WHEEL. I SWITCH OFF THE CURRENT AND THE PIN STAYS UN-LOCK FOR THE SELF MAGNET PIN. I USE A TOGGLE SWITCH ON-OFF-MOMENTARY CONTACT AND A LEGEND LIGHT "TAIL LOCK"
